Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ad1bb5e13d40b6c…

MALICIOUS

PDF

32.7 KB Created: 2021-07-06 11:02:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: c99b3f1ab23fcd61d8219f02d9b3581b SHA-1: 0d2e22eac549ca267693b541a87fbde8c7e4ba00 SHA-256: 9ad1bb5e13d40b6cac18ca845aec2845c1ab760026148559da3e59b92cd19951
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://netcdn.tw/app/431946152/hacks-para-roblox-game-hack PDF link annotation
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-roblox-hair-codes_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-hack-no-download_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-cheat-on-ramboredkill-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-get-one-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-credit-card-payment-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-do-i-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/roblox-free-goft-card_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/coin-master-online-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-hack-to-get-a-girlfriend-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.min1lebak.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-2021-pc_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B68 21872 bytes
SHA-256: c1b01a964c2bc8cda00029d393346f5adba2b88e38b0db88ba8575dc49c17282
font_01_sfnt_off00005bc9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BC9 18808 bytes
SHA-256: 18c04ed6d416389464b421298170c47648070a4b7ff5aa0adb6f039d676fa700

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